Spool



R. K. CLARK Jun 16, 1925.

SPOOL Filed Nov. 19, 1924 INVENTOR FP. K CA/PK Patented June 16, 1925.

UNITED s'i'ATsI 1,4z,611 PATENT "oi -F1CE.

ROBERT K. CLA'BK, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNO'R TO THEAMERICAN lTHItEAD COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEWJERSEY.

steel..`

Applicationnled November 19, 1924. Serial No. 750,798.

To all witam t may ao'ncern:

Be it known that I, ROBERT K, CLARK, a citizen of the United States,residing at S ringfield, coun'ty of Hampden, State of assachusetts, haveinvented a certain new and useful Improve'ment in S'pools, of which thefollowing is a full, clear, and exact description.

My invention relates to spools, and has special reference to an articleof this chatracter that is particularly adapted to receive a universalwinding of thread. The object of the invention is to provide a devicefor securing a head to the shank or core of a spool, which is of simpleand cheap construction and may be easily applied, and which when appliedfirmly secures the head on the core.

The following is adeseription of my invention reference being had to theaccompanying drawings, in which,

Figure 1 is a vertical sectional view, partly in elevation, of -a spoolembodying the invention in its prefei'red form with a mass of threadwound thereon;

Fig. 2 is. a Vertical sectional view of the lower portion of the spoolwith the head and securing device thei'efor shown assembled on the spoolcore, previous to the device be'- ing acted upon to cause it to secureth'e head lto the core;

Fig. 3 is a similar view but with the device shown in securing position;

Fig. 4 is a sectional plan view, taken on the line 4-4 of Fig. 1;

Fig; 5 is a plan view of the blank from which the securing device may beformed; and

Fig. 6 is a view in perspective of the securing device. n

The present application is a continuation in part of my earlierapplication Serial No.- 7 05,810, filed April 11, 1924.

The spool illustrated in the drawings is provided with a cylindricaltube or core 2, usually made of paper or other fibrous material on whichthe thread is wound, and heads 4 secured on the ends of the tube. Asshown each head 4 is made of a relatively thin annular disk of fiber orother suitable material having its central aperture of substantially thesame' diameter .as the interior of the core 2. The inner face of eachhead 4 is preferably covered by an annular disk 6 of felt or similarmaterial to insure a close eter of the annular portion 10 is slihtlygreater than the inner diameter of the ead 4 and tube 2, and the lugs 12are each'provided with an arrow-shaped inner end-forming lateralprojections or teeth 14 on its longitudinal edges. The lugs 12 are bentupwardly on lines 16, spaced a slight distance inwardly from the innerperiphery of the annular portion 10, to a position so that.

each of them is inclined inwardly at an obtuse angle to the plane of theportion 10, and the projections or teeth 14 are bent outwardly, theteeth 14 of each lug 12 being inclined slightly away from each other.The lower edges 18 of the teeth 14 of each *lug 12 are arrangedsubstantially perpendicular to the plane of the lug, and the upper edgesof the teeth are inclined downwardly and outwardly to the lower edges soas to provide sharp pointed ends. Also in the illustrated constructionthe Aannular portion 10 is formed with a series of four equally spacedV-shaped teeth 20 adjacent its outer edge which are bent upwardly.

In securing each head 4 to the core 2, the head is placed over the lowerend of the core, and then the securing device is applied by passing thelgs 12 through the central aperture in the head and into the lower endof the core, so as to position the annular portion 10 of the securingdevice against the lower outer margin of the central aperture of thehead. A cylindrical tool or mandrel of substantially the diameter of theVinterior of the core, is then passed through the annular portion 10 ofthe device and forced a distance into the lower end of the core I of thecgre, and cause the teeth 1a to be firmly embedded or pressed into thematerial: of the core. By having the inner diameter of the anunlarportion 10 slightly larger than the inner diameter of the head 'tandcore 2, and by the use of a tool that will f closely fit the interior ofthe core 2, the lugs are brought tightly over the inner edge of the head4 and are forced tightly and in fact embedded in the inner surface ofthe core. The shape and relative inclination of the teeth of each lugcauses them to be firmly anchored inthe material of the core-.f

When a head has thus been applied to the core, the lugs 12 and theirteeth 14 cooperate With the .annular portion 10 to securely and firmlyhold the head on the' end of the core, and the teeth 20 on the annularportion to firmly hold the head from any tu'rning movement on the core.

In certain cases it is desirable to insert a flanged plug 22 in eitherone or both ends of the core. As shown this plug is provided with a;slightly tapering shank 24 and a flange 26. The shank of the plug is ofa suitable diameter to permit it to be forced p into' and tightly engagethe end of the spool core-,with the flange extending over and tightlyengaging the annular portion 10'` of the securing device. The plug maybe permanently held in place by glue and by a. nail or tack 28 driventhrough the core .and into the shank of the plug. The lu in addition tostrengthening the end o the core and serving as a support for the spool,firmly holds the lugs 12 and their projecting teeth in place, and theannular portion 10 and the head of the spool against the end of thecore.

As will be evident to those skilled in the art, my invention permits ofvarious other modifications without departing from the` spirit thereofor the scope of the appended claims.

What I claim is:

1. A spool comprising a tube, a head for one end of the tube compnisingan annular disk, and means for securing the disk to said end of the tubein fixed position relatively thereto comprising a member having anannular portion having a plurality of lugs projecting upwardly from itsinner periphery, each of said lugs having an outward projection adjacentits end embedded in the inner surface of said tube, the ends of saidlugs bein passed through said annular disk, inserte in said end of thetube, and then pressed outwardly against the inner surface of said tubeto cause said projection to be pressed into said inner surface saidmember engaging said disk so as to hold it-fixed relatively. to saidtube.

2. Aspool com rising a tube, a head for one end of the tu comprising anannular ldisk, land means for. securing the 130 said end of the tube infixed position relatively thereto comprising a member formed from sheetmetal having an annular portion having its inner periphery of greaterdiameter than the inner diameters of the disk and tube, and a pluralityof lugs rojecting upwardly from the inner perip ery of said annularportion, each havingoutwardly extending tooth-like projections on itslongitudinal edges adjacent its end and embedded in the inner surface ofsaid tube, the ends of said lugs being passed through said annulardisk,,inserted in said end of the tube, and then spread outwardly soasto cause said projections to be embedded in the inner surface of saidtube said member engaging said disk so as to hold it fixed rel'- ativelyto said tube.

3. A spool comprising a tube, a head for one end of the tube comprisingan annular disk, and means for securing the disk to said end of the tubein fixed position relative thereto comprising a member formcd from sheetmetal having an annularportion having its outer periphery of greaterdiameter than the inner diamet-er of the tube, and a plurality of lugsprojecting up- 'Wardly from the inner annular portion, each havingoutwardly extending tooth-like projections on its longitudinal edgesadjacent its end and embedded in the inner surface of said tube, the

g ends of said lugs being passed through said annular disk,'inserted insaid end of the tube, and then spread outwardly so as to cause saidprojections to be embedded in the inner surface of said tube, saidannular periphery of said member having teeth engaging said head i andheld in engagement therewith by said tooth-like Irojections.

4. A spool comprising a tube, a head for one end of the tube comprisingan annular disk, and means for securing the disk to said end of the tubein fixed position relative thereto comprisin va member formed from Sheetmetal having an annular portion having its inner periphery of greaterdiameter than the inner diameters of the disk and tube, and a pluralityof lugs projecting upwardly from the inner periphery of said annularportion, at 'least oneof said lugs having an outward projection adjacentits end and embedded in the inner surface of said tube, the ends of saidlugs being passed through said annular disk, inserted in said end of thetube, and then spread outwardly against the inner surface of said tube,said projection being pressed into said surface, and a tubular plugenterin 'the end of said tube and engaging sai lugs so as to hold saidprojections in engagement With said tube.

'5. A spool comprising a tube, a' head for one end of the tubecomprising an annular disk, and means for securing the disk to said endof the tube in fixed position relative thereto comprising a memberformed from Sheet metal havin an annular portion having its outer peripery of greater diameter than the inner diameter of the tube, and aplurality of lugs projecting upwardly from the inner periphery of saidannular portion, each having 'outwardl extendin tooth-like projeetionson its ongitudina edges adjacent its end and embedded in the innersurface of said tube, the ends of said lugs being passed throu h saidannular disk, inserted in said end o the tube, and then spread outwardlyso as to cause said projections to be embedded in the inner surface ofsaid' tube, and a tubular plug entering the end of said tube andengaging said lugs so as to hold said projections in engagement withsaid tube, said plug having an enlargement and said annular member havinteeth held in engagement with said head y said enlargement. a

. 6, A spool com rising a tube, a head for one end of the tu comprisingan annular disk, and means for securing the disk to said end of the tubein fixed position relative thereto eomprising a member having an annularportion engaging the outer surface of the disk, and a portion projectingfrom the inner ed e of said annular portion, passed throug said disk andinserted in and attached to said end of the tube, said annular portionhaving a projection pressed into the outer surface of said disk and heldin engagement therewith by said projecting portlon.

ROBERT K. CLARK.

